Police escort a man after a minivan crashed into a school in St.Paul, Alta., Thursday, Oct.25, 2012. Police say a child was pinned under the minivan after it went through the wall of Racette Junior High School in St. Paul, east of Edmonton.THE CANADIAN PRESS/St.Paul Journal-Ryan McCracken | THE CANADIAN PRESS/St.Paul Journal-Ryan McCracken

UPDATE: CP reports that three Grade 6 students who were injured in the crash remain in hospital, two of them in stable, but critical, condition after they were taken by air ambulance. Five other children were also injured, three of whom have been released from hospital. The school remains closed Friday.

A student was pinned and suffered serious injuries after a van crashed through a wall and into Racette School in St. Paul, Alberta, Thursday morning.

The crash occurred around 9:30 a.m. when, "the driver of a mini van went off the road and drove into the side of Racette School," said RCMP spokesperson Doris Stapleton.

"The vehicle went through the walls of a classroom. Police can confirm that one child was pinned beneath the vehicle and has sustained serious injury. Police and EMS on scene."

Stapleton said the student was airlifted to hospital in Edmonton by STARS air ambulance.

"Two other students who were injured in the incident are being treated in a St. Paul hospital," she said.

"RCMP have taken the driver of the vehicle that drove into the school in St. Paul earlier today into custody," said Stapleton, but did not elaborate on the nature of the arrest.

"RCMP Collision Crash Team, which is a specialized unit trained to investigate serious motor vehicle accidents, is on scene."

An investigation is underway to determine what caused the 46-year-old- male driver, who is a resident of St. Paul, to go off the road and crash through the wall of a classroom, a release by the RCMP said. The driver received minor injuries in the crash.

CP reports the driver was combative while being taken into custody.

UPDATE: Oct. 26 - 1:28 p.m. -- RCMP reports that Richard Edward Benson, 46, has been taken into custody and faces several charges, including three counts of dangerous driving, one count of resisting arrest and one count of possession of a controlled substance.

UPDATE: Oct. 26. - 11:30 a.m. -- CP reports that three Grade 6 students who were injured in the crash remain in hospital, two of them in stable, but critical, condition after they were taken by air ambulance. Five other children were also injured, three of whom have been released from hospital. The school remains closed Friday.